Every company emphasis customers' security and privacy. They always try to secure customers with the data they have collected. It's also necessary to protect that data according to different laws that give protection to the customers. So every company cares about customers' privacy and security. But it may be possible that something goes wrong accidentally as it happened with BitMEX. Where email addresses leaked in Software error. AS they noticed that an immediate action took by the company to protect the remaining addresses.
They said in their Blog "We are aware that some of our users have received a general user update email earlier today, which contained the email addresses of other users,".
More added "Our team have acted immediately to contain the issue and we are taking steps to understand the extent of the impact. Rest assured that we are doing everything we can to identify the root cause of the fault and we will be in touch with any users affected by the issue."
They said sorry to the users and make an apology on the situation for address leak.